.login-box {
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
input {
    border: none;
}
.username input,.password input {
    height: 3vh;
    width: 35vh;
    border: 1px solid gray;
    
}
.btn input {
    display: block;
    width: 7vh;
    height: 3vh;
    border: 1px solid gray;
    
    text-align:center;

}
.username,.password {
    padding-bottom: 0.5vh;
}

/* 登录页面抬头样式修改 */
.loginTitle {
    color:white;
}